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Hi Fred, Would you have a schematic for a 90 deg coupler? Everett N4CY Sent from the all new AOL app for iOS

Contact DX Engineering. They now own the design.

It is a 90 degree hybrid, utilising cascaded phase shift networks, to combine two inputs with a 90 degree phase difference. This is required to produce omnidirectional, circular polarisation, when

If you want to achieve a horizontal directional pattern with two othogonal horizontal dipoles, you need to combine them with a 90° Coupler. Its then called a turnstile dipole. That's what Rohde &

Hi Hisami, I was lucky and could buy such an JH-6-4 coupler second hand. It was still not cheap as I bought it abroad. As this is an older device I do not think that anyone is still selling them new

Good morning out there.? ?I have a Pixel loop and the amp has lost all gain, although RF still makes it through but without any gain.? Does any one know of a source for a schematic of this amp?? I

Thanks for pointing this out Elio. I have fixed the text. /g/loopantennas/files/VE3PSZ%204-Way%20Multicouple%20General%20Notes.pdf

Hi All, I came across "The R&S HE-015 active antenna" by chance. http://rxcontrol.free.fr/Receivers/HE015/ In the pictures there, the combiner seems to be "anzac

sorry to bother you, but the manual for the "4 way multicoupler" should read: [...] Receiver protection can be enabled by shorting *JP-1*. This will limit the output signal to about +6 dBm, but some

I just finished another batch of receiver multicouplers. If anyone need one, contact me at thomas.b.seeger@gmail(.com) As usual, free shipping to anywhere in the world. 73

The following photos have been updated in the Azi-Loop Self-Supporting Structure for Transportable / DXpedition Use ( /g/loopantennas/album?id=301249 ) photo album of the

anilkraj@... added the photo album Ferrite Loop for NDB ( /g/loopantennas/album?id=301865 ) : Ferrite Loop Antennas for NDB hunting --- The following photos have been

Fellas, I've had my Aziloop since last Summer. I can 100% recommend it. The sensitivity is great right up to 10 meters. I'm up there quite often to check propagation. The circumference of my loops

Hi Rolf, I have not tuned above the 16 meter band, but the HF reception lower than this band seems fine. I have mostly tuned from 90 meters to 19 meters, and have not felt the sensitivity was

Hy Guy, I I also have an azi loop on my workbench and hope to install it in about 4-8 weeks. Have you already been able to gain experience in the HF range (3-30 MHz)? Maybe the loops should be a

Thanks for your first impressions, just as I suspected. By next week in Grayland, I'm sure the sun will have recovered and you'll be able to reap a good harvest from the Pacific. And with Perseus and

Hi Christoph, Yes, I've been please thus far with medium wave results. Besides the excellent nulling available 0-360 degrees of the compass, I am finding that nulls are generally broadbanded and

Thanks Guy for the interesting view of your finished AziLoop. The whole construction is very solid and a good idea for the setup. Even though I plan to bury my radials underground because of the

Hi Simon, I wouldn't exactly call it a hill, but just a slight slope. Still, I did take care to keep the elevated radials level. One one side of the antenna the radials are about one foot above

I think you are right. A 1K resistor between the coil and the pot wiper would probably correct this, and make for smoother adjustment.